9 replies to this topic

[iceberg210]

So I know there are many different types of grips even just in one manufacture. I got to wondering whether it was the same way with sheaves. Did Riblet for example make a couple different models of sheaves or just one that they used for everything? I was wondering about Yan, Riblet, everyone really.

Thanks for the help!

[Allan]

iceberg210, on May 18 2009, 01:38 PM, said:

So I know there are many different types of grips even just in one manufacture. I got to wondering whether it was the same way with sheaves. Did Riblet for example make a couple different models of sheaves or just one that they used for everything? I was wondering about Yan, Riblet, everyone really.

Thanks for the help!

We have four different types of sheaves on our one YAN alone... Regular 10", regular with a turned down flange for negative assemblies, wide flange for negative assemblies and gondola 20". Our Doppelmayr FGQ has three different types - all 400mm there are the standard ones with aluminum sideplates, ones with steel sideplates and weighted ones. The Mueller has all the same type, same with the Thiokol. Most manufacturers have a few different diameters though.

[iceberg210]

Very interesting, thanks for the help Allan!

Anyone got any information on Riblet sheaves now that we have info on Yan and Dopps, and others...

[FSJ]

iceberg210, on May 20 2009, 11:53 AM, said:

Very interesting, thanks for the help Allan!

Anyone got any information on Riblet sheaves now that we have info on Yan and Dopps, and others...

Almost all Riblet sheaves are 16" groove diameter (except for the 8" safety wheels). There were a few lifts installed with 20" sheaves. The only remaining lift with the 20" machinery that I am positive of is Lutsen #8, but I think there is another.

There are about 4 basic styles of 16" sheaves. (I will need to do a little more research)

Spoked sheaves for 1 1/8" rope
Solid back with gussets for 1 1/4" to 1 3/8"
Solid back for 1 1/8" to 1 1/2" rope (w/ tapered roller bearings)
Solid back for 1 1/8" to 1 1/2" rope (w/ unipac sealed bearings)

Difference between breakover and depression is tire and sideplate, except solid back sheaves which use the same tire for both.

[JSteigs]

Also Dopplemayr, Ctec and Garaventa, use weighted sheaves in lead in and out positions as a derail safety. If the rope comes off the assembly the weighted sheaves will tip part of the assembly breaking a brittle fork. The weight difference is made by using steel hubs, flanges, or both instead of aluminum.

[liftmech]

The Flyer (1986 Poma) has three different styles of sheaves: the standard line sheave (450mm); a bolted-flange terminal sheave which is called the 420J, but uses a standard 450 liner; and a 364mm terminal deflection sheave.

[Jonni]

I know for terminal sheaves I have seen Poma detachs with some 550mm sheaves both for PTO sheaves as well as deflection sheaves into the bullwheel. For Dopps I'm not sure of the exact size but I have heard of 300s and 400s millimeter sheaves, although I don't know those numbers for sure.

[Lift Kid]

So, do all of the manufacturers have names for their different "models" of sheaves? Like for instance, we have the Doppelmayr model 401 sheaves. How many more "models" does doppelmayr have, and are there different "models" found on any given lift, or are they all variations of one "model"? Same question pertains to other manufacturers. What are some of the model names of sheaves for any and all manufacturers?

[Allan]

Lift Kid, on Jun 18 2009, 08:58 PM, said:

So, do all of the manufacturers have names for their different "models" of sheaves? Like for instance, we have the Doppelmayr model 401 sheaves. How many more "models" does doppelmayr have, and are there different "models" found on any given lift, or are they all variations of one "model"? Same question pertains to other manufacturers. What are some of the model names of sheaves for any and all manufacturers?

The 400 is the diameter in millimetres - I'm not sure how many different diameters there are for Doppelmayr's aerial lifts - I think there are the 500's too. According to the service manual there's also type A, C, and OE's for the surface lifts.

[SuperRat]

Doppelmayr also has different sheave liners for line sheaves and certain terminal sheaves. The most common liner profile has a 'U' shaped rope groove and they're used for line sheaves and some terminal sheaves. The coupling area of a detachable terminal will have special liners to accommodate the movement of the jaw. In our old MGD-210 these liners have a broad 'V', in our newer UNI-GS they have a shallow 'U' center rope groove with two narrow grooves for the jaws.